一种全无铅铕基钙钛矿纳米晶及其制备方法与应用
CsEuX3 nanocrystals were synthesized by thermal injection, introducing Tb3+ and Eu3+ ions. This solved the problem of unsatisfactory monochromatic emission of lead-free perovskite nanocrystals, achieving efficient blue, green, and red light emission, expanding the display color gamut, improving display effect, and applying it to multiple optoelectronic fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUDAN UNIVERSITY
- Filing Date
- 2023-12-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lead-free perovskite nanocrystal materials have unsatisfactory monochromatic emission, which prevents them from expanding the display color gamut and improving the display effect.
Using a hot-injection method, cesium salts, europium salts, and organic halogens as raw materials, organic acids and organic amines as ligands, and high-boiling-point olefins as solvents, lead-free europium-based perovskite nanocrystals with a structure of CsEuX3 were synthesized. Tb3+ and Eu3+ ions were introduced to achieve energy transfer from the perovskite nanocrystals to rare earth ions, thus preparing nanocrystals that emit blue, green, and red light.
The prepared CsEuX3 nanocrystals have high photoluminescence quantum efficiency and high monochromaticity, and can be widely used in solar cells, light-emitting diodes, lasers, backlight displays and communications.
Smart Images
Figure CN117902611B_ABST